This part of IEC 61156 is a guide to indoor cables which specifies the definitions and requirements of multicore@ symmetrical pair and quad cables used in digital communication systems such as ISDN@ local area networks and data communication systems.?
61156-1 CORR 1-2005由IEC - International Electrotechnical Commission 发布于 2005-03-01,并于 2007-06-07 实施。
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